Rare Stem Formation Double Series Opaque Twist Wine Glass c1760

Description

Heading : Double series opaque twist wine glass
Period : George II / George III – c1760
Origin : England
Colour : Clear
Bowl : Bucket with everted rim
Stem : A pair if spiral threads outside a bead-like gauze
Foot : Conical 
Pontil : Snapped 
Glass Type : Lead
Size :  15.5cm height. 5.9cm diameter bowl. 6.2cm diameter foot
Condition : No chips or cracks 
Restoration : The foot rim has been polished in the distant past. natural wear has accumulated
Weight: 147 grams 

This is the first example that we have seen with this specific stem formation.The internal gauze is twisted but it is not a corkscrew.